EP3148211A1 - Ear unit - Google Patents
Ear unit Download PDFInfo
- Publication number
- EP3148211A1 EP3148211A1 EP16193043.3A EP16193043A EP3148211A1 EP 3148211 A1 EP3148211 A1 EP 3148211A1 EP 16193043 A EP16193043 A EP 16193043A EP 3148211 A1 EP3148211 A1 EP 3148211A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ear
- anchor
- ear unit
- hearing element
- tragus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000000613 ear canal Anatomy 0.000 claims abstract description 28
- 238000013016 damping Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000005662 electromechanics Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 241000746998 Tragus Species 0.000 description 34
- 210000001699 lower leg Anatomy 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 210000000624 ear auricle Anatomy 0.000 description 3
- 210000003454 tympanic membrane Anatomy 0.000 description 3
- 210000000883 ear external Anatomy 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C7/00—Ear-rings; Devices for piercing the ear-lobes
- A44C7/004—Ear-clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/105—Earpiece supports, e.g. ear hooks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
- H04R25/652—Ear tips; Ear moulds
- H04R25/656—Non-customized, universal ear tips, i.e. ear tips which are not specifically adapted to the size or shape of the ear or ear canal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/09—Non-occlusive ear tips, i.e. leaving the ear canal open, for both custom and non-custom tips
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
Definitions
- the invention relates to a system for removable ear attachment in general and in particular a sub-tragus ear unit for comfortable attachment of an ear unit.
- Microphone/earpiece combinations wireless or attached by wire, to telephones, music systems, switchboards etc. are well known. A wide variety of solutions exist.
- the sound emitting device also known as a hearing element
- a housing unit comprising a hearing element is positioned inside the concha and within the tragus and anti tragus, while a funnel ducts the sound into the ear canal.
- the funnel is provided with a gasket having flanges to dampen ambient sounds.
- such devices use the ear canal for attachment. While the solution is compact, removes ambient sound efficiently and also allows for good audio fidelity it suffers from the disadvantage of being uncomfortable due to pressure exerted on the pressure sensitive ear canal.
- Another solution is the "on ear” solution, wherein the hearing element is held against the ear having a concha.
- This geometry allows for a wide hearing element to be placed flat against the concha.
- this solution requires a separate means for holding the hearing element in position over the concha and several such means are well known in the art, such as over-head attachment, headband and over-ear attachment.
- This solution is simple but suffers from long term discomfort due to pressure exerted on the ear by the means for holding.
- There can also be problems with ambient sound entering the ear unless a sound absorbing cushion is used that encloses the ears fully bringing in other disadvantages such as large size.
- a third solution is the "ear bud" solution where a housing unit comprising a hearing element is positioned inside the concha and held in place by tragus and anti tragus. In this way the housing unit also forms the means for holding the hearing element in place. While compact the disadvantage is discomfort due to pressure exerted on the tragus and anti tragus and also that it is difficult to exclude ambient sounds. If the pressure against the tragus and anti tragus is reduced the ear bud then is rather loose and can easily fall out.
- a fourth solution is proposed by the present applicant as disclosed in WO/2002/045390 relating to an earpiece having a C-shape, and WO/2008/147215 relating to an improved earpiece having a curve and a curvature.
- Both disclose comfortable means for stable attachment to an anti helix of an ear.
- the former discloses an open solution that allows the auditory canal to remain open to the surroundings to a certain degree, which provides better comfort than a unit that blocks or closes off the auditory canal. This provides air circulation at the expense of admitting ambient sounds.
- in-ear speakers as disclosed in WO/2009/143055 where a hearing element is placed into the concha and facing the tragus, perpendicular to that of the on-ear solution.
- the problem is stable positioning of the hearing element and discomfort relating to the edge of the hearing element is pressed against the inner wall of the concha when positioned in the ear.
- a main objective of the present invention is to provide a system for a compact and comfortable solution having an improved attachment that does not cause discomfort in the ear canal and is also capable of excluding ambient sound.
- an ear unit as defined in the preamble of claim 1, having the features of the characterising portion of claim 1, and a method fined in the preamble of claim 10, having the features of the characterising portion of claim 10.
- the present invention attains the above-described objective by separating the attachment, transducer and optionally occlusion functionalities into two distinct parts: an anchor that provides stable attachment relative to an ear, and an hearing element connected to said anchor and that comprises the transducer which provides sound, wherein the hearing element is provided with an aperture which when the ear unit is positioned into an ear having a concha and a tragus, the aperture enters a sub-tragus region, thus projecting the sound into the sub-tragus region.
- the aperture can be an opening by the hearing element.
- the hearing element can be further be provided with an audio duct having an audio duct opening in which case the aperture is said audio duct opening.
- the hearing element provides an occlusion.
- the occlusion can be perforated with holes that are large enough to admit diffusion of air, yet small enough to prevent sound propagation.
- a load bearing anchor for stable fitting to an ear having an antihelix and a tragus, comprising a curve having an upper end and a lower end, wherein parts of the curve falls along the inner part of the antihelix, wherein the lower end extends into an extended lower end which is partly positioned under the tragus, preventing the distortion of the concha by keeping the antihelix at a substantially constant distance from the tragus when the anchor is positioned into the ear and a force is applied to the anchor in the direction of the intertragic notch.
- the anchor does not fill the entire concha but instead comprises two branches, the first branch falls along the inner part of the antihelix and the second branch extends into an extended lower end which is partly positioned under the tragus.
- the concha will deform slightly by elongating in the direction of the force and narrowing in a direction perpendicular to said force, thus the tragus and antitragus comes closer.
- the anchor according to this invention inserted the two branches will resist the narrowing. At the same time the force is distributed across a large area.
- Outer ear 10 also known as pinna comprises a plurality of features of significance. Outermost is helix 11 tracing the periphery of the ear upwards and in towards the skull where it transitions into crus of helix 12. Within this is antihelix 13 which in the upward direction bifurcates into crura of antihelix 14, comprising superior crux 15 and inferior crux 16, separated by fossa triangularis 17.
- antihelix Below antihelix is sulcus auriculae posterior 18 and further below that again is antitragus 22 which is opposite tragus 21, separated by incisura intertragica 23, also known as the intertragic notch. Within these again is concha 24 which comprises cymba concha 25 and cavum concha 26, separated by crus of helix 12.
- the ear canal 30 Immediately within and partially covered by the tragus is the entrance to the ear canal 30. It is important to realize that this entrance is still a part of cavum concha.
- the ear canal proper extends from the deepest part of the concha to the eardrum 29, a distance of about 2.5 cm and approximately 4 cm from the tragus.
- the ear canal comprises an approximately 8 mm lateral cartilaginous part and an approximately 16 mm medial osseous part. It should also be noted that it is typically quite uncomfortable to have any foreign object in the ear canal.
- the ear canal is partially visible from the outside and is indicated in Fig. 1A .
- This area immediately within and partially covered by the tragus 21 does not have an official anatomical name. Since this area is central to the invention and has acoustic and other distinguishing properties relating to comfortable wear it has been called the sub-tragus region 28 for the purpose of this document and is shown in Fig. 1B .
- the ear canal 30 is located below the sub-tragus region.
- Fig. 2A shows the operating principles of the present invention, with an ear unit inserted into an ear as seen from the outside.
- a line A - A indicates a section for Fig. 2B and Fig. 2C .
- the anchor 200 comprises the curve 210 having an upper end 212, a lower end 214 and a curvature 218. Due to the angles it is not possible to clearly show all components of the anchor in all figures.
- the underlying principle is that by separating the anchoring function 200 from the hearing element 350 it becomes possible to position the hearing element 350 in an optimal position without causing discomfort. By further positioning the hearing element so that it projects in underneath the tragus 21 and enters the sub-tragus area 28, sound is directed into the ear canal without the discomfort that is associated with having a foreign object entering the ear canal.
- the hearing element 350 is provided with a hearing element opening 352 where the opening or aperture faces the opening to the ear canal which extends from the sub-tragus area.
- the hearing element enabled by the separate anchoring, projects underneath the tragus. This can be achieved in several ways.
- a hearing element 350 in the form of an electro acoustic transducer 360 is positioned underneath the tragus. Said hearing element is dimensioned to fit in the sub-tragus region.
- Fig. 2B shows schematically the above construction.
- the hearing element 350 comprises an electro acoustic transducer 360 attached to an audio duct 354 provided with an audio duct opening 356.
- the audio duct is smaller than the wavelength of the sound, having a frequency of typically 20 Hz to 20000 Hz, corresponding to a wavelength of 15 m to 15 mm respectively, sound is conducted without significant distortion and the effective aperture becomes the opening of the audio duct.
- This second embodiment allows for having the electro acoustic transducer larger than that of the first embodiment by retracting it away from the tragus. Since the effective hearing element is the end of the funnel and that this end projects into the sub-tragus region the technical effect is the same as for the first embodiment.
- Fig. 2C shows schematically the above construction.
- This second embodiment also allows for the electro acoustic transducer to be oriented at an angle that is not parallel to the plane of the audio duct opening. It is preferred that this audio duct opening is perpendicular to the entrance over the ear canal.
- the on ear construction will involve structures that are of the order of the wavelength of high frequency sound, particularly relating to the size of the concha but potentially also of the hearing element according to the fifth solution.
- the audio duct is not in contact with the concha or the tragus.
- the separation distance will be small compared to the wavelength of the sound and this will therefore lead to a damping of ambient sound, depending on separation distance, length of the audio duct and acoustic impedance mismatch.
- the embodiment of the ear unit according to the invention shown in Fig. 3 and 4 comprises an anchor similar to the applicant's applications, specifically the C-shape as disclosed in WO/2002/045390 , and the improved earpiece having a curve 210 and a curvature 218 as disclosed in WO/2008/147215 , the curve having an upper end 212 and a lower end 214.
- the hearing element 350 is further provided with a gasket 370 arranged substantially around a periphery of the hearing element in order to further stabilise the position of the hearing element as well as provide extra damping of ambient sound.
- the gasket is preferably made from a resilient material that easily shapes itself to the anatomical details of the ear without exerting uncomfortable pressure. Said gasket is further preferably detachable so that a user can remove it if it is preferred to hear some ambient sound or to change between different sizes and shapes to select the most comfortable size and shape.
- the gasket can comprise one or more flanges 372.
- the housing 300 is the mechanical interface between the anchor 200 and the hearing element 350 and is typically suited for holding electronics, wire attachments and the like.
- the anchor is shown in prior art as having a clearly defined lower end, it is within the scope of the definition that the lower end can be embedded in a larger unit such as a housing part.
- Fig. 3 and Fig. 4 both show such a larger part surrounding the lower end. Due to the angles it is not possible to clearly show all components of the anchor in all figures.
- damping of ambient sound can be achieved by attaching a sound damping unit 600 to the anchor.
- Said sound damping unit is positioned so that when the ear unit is positioned into an ear the sound damping element is located over the concha. This is shown in fig. 6 .
- the sound damping element typically comprises a shell 610 and a connector to attachment part 620.
- the attachment part is adapted for connection to attachment end 504.
- the sound damping unit can be further stabilised by a part extending into fossa triangularis 17 and/or a part extending under the fold at the top of helix 11.
- the anchor may be optimised for a larger load bearing capacity than disclosed in in WO/2002/045390 and WO/2008/147215 .
- Light weight in this context means a weight that is so small that the concha is insignificantly distorted when positioned into an ear.
- the inventor has found that a larger weight can be supported if the anchor is modified to compensate or prevent said distortion.
- the inventor found that a larger weight pulls the concha down in the direction of gravity. If the user is lying down the pressure is exerted on the anti helix and the curve will distribute the force over a sufficiently large area to avoid this being a problem. If the user is standing up right the force instead exerts in the direction of the intertragic notch. This would result in the concha being pulled downwards and also narrowed so that the area near the tragus would approach the area near the anti tragus.
- the load bearing capacity can be further improved by having the upper end of the anchor engage the anterior part of the helix and/or the crus of helix.
- Such a construction has a wide range of application in addition to holding a sound damping element. It could for instance be used to hold ear jewellery and avoid having to puncture the ear lobe for attachment purposes. Such jewellery can be so heavy that traditional ear attachment would be uncomfortable.
- Attachments would typically be through an adaptor called attachment part 500 connected at a first end to the curve, the housing or both and adapted for attachment to external units.
- the attachment part is provided with an attachment arm 502 to allow the attachment to be offset at a distance from the concha.
- an attachment end 504 is provided at a second end of the attachment part, typically opposite the first end of the attachment part.
- this attachment end allows for guided attachment and/or detachment of external units while having the anchor still inserted in the ear.
- the attachment part extends straight out from the area just outside the concha. Where further stability or load bearing capacity is required the attachment part extends through the intertragic notch, optionally contacting the intertragic notch.
- a part extending out from the load bearing anchor would form a convenient and hygienic attachment.
- the attachment part would extend from the anchor through the intertragic notch. This is shown in fig. 7 .
- the ear unit can be provided with a part extending downward 400, providing room for battery, electronics, antennas or attachment facilities for wires.
- This also has the benefit of providing stability by lowering the centre of gravity.
- this part extending downwards passes through the intertragic notch and thus provides extra stability.
- This part extending part downward can also provide a convenient basis for the attachment part.
- occlusion in prior art is an inherent property of the design and is fixed with only very minor adjustments such as providing ear buds with extra gaskets will improve the degree of occlusion.
- the inventors of the present invention has realised that by separating attachment functionality to an anchor separated from the hearing element it is possible to provide occlusion in a first inner position wherein the hearing element occludes the opening to the ear canal, and be retracted relative to the anchor into a second position where a passage opens between the hearing element and the concha.
- the retraction can be away from the tragus, away from the opposite side of the concha from the tragus or both.
- Retraction in this context means both a movement outwards as well as reducing the cross section of the hearing element, for instance by deflation of a cushioning element or retraction of a gasket, optionally comprising flanges. The effect of this is to open for a passage around the parts occluding in the first position.
- Fig. 8A and 8B shows a hearing unit in an un-occluded position and in an occluded position respectively.
- Adjusting between the first and the second position can be made without removing the ear unit from the ear.
- the anchor can take on many forms as long as it provides a stable anchoring in the ear without the need for ear canal attachment and still remain within the scope of the invention.
- Such alternative anchors can be based on prior art, such as over-head attachment, headband and over-ear attachment.
- the invention finds use in ear attached units for holding a hearing element, and outer elements such as a sound damping element.
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Otolaryngology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Psychology (AREA)
- Manufacturing & Machinery (AREA)
- Neurosurgery (AREA)
- Headphones And Earphones (AREA)
Abstract
Description
- The invention relates to a system for removable ear attachment in general and in particular a sub-tragus ear unit for comfortable attachment of an ear unit.
- Microphone/earpiece combinations, wireless or attached by wire, to telephones, music systems, switchboards etc. are well known. A wide variety of solutions exist.
- One solution is known as the "in-ear" solution, wherein the sound emitting device, also known as a hearing element, enters the ear canal. Typically a housing unit comprising a hearing element is positioned inside the concha and within the tragus and anti tragus, while a funnel ducts the sound into the ear canal. Frequently the funnel is provided with a gasket having flanges to dampen ambient sounds. Typically such devices use the ear canal for attachment. While the solution is compact, removes ambient sound efficiently and also allows for good audio fidelity it suffers from the disadvantage of being uncomfortable due to pressure exerted on the pressure sensitive ear canal.
- Another solution is the "on ear" solution, wherein the hearing element is held against the ear having a concha. This geometry allows for a wide hearing element to be placed flat against the concha. Unlike the in ear solution, this solution requires a separate means for holding the hearing element in position over the concha and several such means are well known in the art, such as over-head attachment, headband and over-ear attachment. This solution is simple but suffers from long term discomfort due to pressure exerted on the ear by the means for holding. There can also be problems with ambient sound entering the ear unless a sound absorbing cushion is used that encloses the ears fully bringing in other disadvantages such as large size.
- A third solution is the "ear bud" solution where a housing unit comprising a hearing element is positioned inside the concha and held in place by tragus and anti tragus. In this way the housing unit also forms the means for holding the hearing element in place. While compact the disadvantage is discomfort due to pressure exerted on the tragus and anti tragus and also that it is difficult to exclude ambient sounds. If the pressure against the tragus and anti tragus is reduced the ear bud then is rather loose and can easily fall out.
- A fourth solution is proposed by the present applicant as disclosed in
WO/2002/045390 relating to an earpiece having a C-shape, andWO/2008/147215 relating to an improved earpiece having a curve and a curvature. Both disclose comfortable means for stable attachment to an anti helix of an ear. The former discloses an open solution that allows the auditory canal to remain open to the surroundings to a certain degree, which provides better comfort than a unit that blocks or closes off the auditory canal. This provides air circulation at the expense of admitting ambient sounds. - For the fifth solution one should refer to in-ear speakers as disclosed in
WO/2009/143055 where a hearing element is placed into the concha and facing the tragus, perpendicular to that of the on-ear solution. The problem is stable positioning of the hearing element and discomfort relating to the edge of the hearing element is pressed against the inner wall of the concha when positioned in the ear. - References should also be made to the following documents:
-
GB833506 -
US5712453 , relating to a concha stabiliser, wherein a headset comprises a tubular extension or a voice tube extending down and towards a user's mouth, -
WO2004/068896 , relating to an ambidextrous ear piece having a D-shape comprising an arcuate rib and a vertical rib, wherein the earpiece is provided with a boss that fits a wearer's ear canal, -
WO03/096745 -
US3053061 , relating to inserts which are individually molded and sculptured to fit into ears of a user, -
FR2437802 -
DE8911607 U1 , relating to ear attachment, and -
DE10117705 , relating to a sound dampening device for use with ear units. - Finally references should be made to
WO2009/018825 regarding an earphone device with an ear canal protrusion, and
WO2006/104981 , relating to an ear module for a sound system, having an interior lobe extending into the exterior opening of the ear canal, including a forward surface adapted to fit against the forward wall of the ear canal. - Therefore, a main objective of the present invention is to provide a system for a compact and comfortable solution having an improved attachment that does not cause discomfort in the ear canal and is also capable of excluding ambient sound.
- The objective is achieved according to the invention by an ear unit as defined in the preamble of
claim 1, having the features of the characterising portion ofclaim 1, and a method fined in the preamble ofclaim 10, having the features of the characterising portion ofclaim 10. - The present invention attains the above-described objective by separating the attachment, transducer and optionally occlusion functionalities into two distinct parts: an anchor that provides stable attachment relative to an ear, and an hearing element connected to said anchor and that comprises the transducer which provides sound, wherein the hearing element is provided with an aperture which when the ear unit is positioned into an ear having a concha and a tragus, the aperture enters a sub-tragus region, thus projecting the sound into the sub-tragus region.
- The aperture can be an opening by the hearing element.
- The hearing element can be further be provided with an audio duct having an audio duct opening in which case the aperture is said audio duct opening.
- Optionally the hearing element provides an occlusion.
- Optionally the occlusion can be perforated with holes that are large enough to admit diffusion of air, yet small enough to prevent sound propagation.
- The present invention attains the above-described objective by a load bearing anchor for stable fitting to an ear having an antihelix and a tragus, comprising a curve having an upper end and a lower end, wherein parts of the curve falls along the inner part of the antihelix, wherein the lower end extends into an extended lower end which is partly positioned under the tragus, preventing the distortion of the concha by keeping the antihelix at a substantially constant distance from the tragus when the anchor is positioned into the ear and a force is applied to the anchor in the direction of the intertragic notch.
- The technical differences over prior art is that a sub-tragus system is provided wherein the attachment is provided by an anchor and not by any elements protruding into the ear canal.
- These effects provide in turn several further advantageous effects:
- it makes it possible to avoid bulky holding means as for the on-ear solutions and instead use light weight anchors such as those of the fourth solution,
- it avoids discomfort related to elements entering the ear canal,
- it allows for a light weight structure,
- it avoids discomfort relating to pressure exerted on the tragus and anti tragus, and
- it enables stable positioning in the ear without exerting uncomfortable pressure against the concha.
- Optionally it also allows for further advantageous effects:
- it allows for excluding ambient sound without use of a large absorbing cushion around the ear, and
- it allows for air circulation.
- The technical differences over prior art is that the anchor does not fill the entire concha but instead comprises two branches, the first branch falls along the inner part of the antihelix and the second branch extends into an extended lower end which is partly positioned under the tragus. Normally, when a force is applied to the concha in the downward direction when a person is standing up, the concha will deform slightly by elongating in the direction of the force and narrowing in a direction perpendicular to said force, thus the tragus and antitragus comes closer. However with the anchor according to this invention inserted the two branches will resist the narrowing. At the same time the force is distributed across a large area.
- These effects provide in turn several further advantageous effects:
- it make sit possible to use lighter and more unobtrusive means for attachment,
- it provides more comfort in that there is less deformation of the ear
- the reduced deformation allows for larger load bearing without discomfort than means that permit deformation of the concha
- The invention will be further described below in connection with exemplary embodiments and illustrative examples which are schematically shown in the drawings, wherein:
-
Fig. 1A shows the anatomy of a human ear from the outside, -
Fig. 1B shows a cross section the anatomy of a human ear along A - A, -
Fig. 2A shows the operating principles of the present invention, with an ear unit inserted into an ear as seen from the outside, -
Fig. 2B shows the operating principles of the present invention in an intersection along A - A in a first embodiment, -
Fig. 2C shows the operating principles of the present invention in an intersection along A - A in a second embodiment, -
Fig. 3 and4 show two preferred embodiments of the present invention, -
Fig. 5A shows an improved load bearing anchor inserted into an ear wherein the attachment part extends from the curve over the concha, -
Fig. 5B shows the improved load bearing anchor ofFig. 5A close to the plane of the curve -
Fig. 5C shows the improved load bearing anchor ofFig. 5C at a different angle. -
Fig. 6 shows a sound damping element attached to the load bearing anchor, -
Fig. 7 shows an alternative use of a load bearing anchor wherein the attachment part extends from the curve through the intertragic notch, and -
Fig. 8A and 8B shows a hearing unit in an un-occluded position and in an occluded position respectively. - The following reference numbers and signs refer to the drawings:
10 Pinna 11 Helix 12 Crus of helix 13 Antihelix 14 Crura of antihelix 15 Superior crux 16 Inferior crux 17 Fossa triangularis 18 Sulcus auriculae posterior 21 Tragus 22 Antitragus 23 Incisura intertragica, intertragic notch 24 Concha 25 Cymba concha 26 Cavum concha 27 Scapha 28 Sub-tragus region 29 Tympanic membrane, eardrum 30 Ear canal 100 Ear unit 200 Anchor 210 Curve 212 Upper end 214 Lower end 216 Extended lower end 218 Curvature 300 Housing 350 Hearing element 352 Hearing element opening 354 Audio duct 356 Audio duct opening 360 Electroacoustic element 370 Gasket 372 Flanges 400 Part extending downwards 500 Attachment part 502 Attachment arm 504 Attachment end 600 Sound damping element 610 Shell 620 Connector to attachment part - In order to gain an understanding of the background of the invention it is important to know the anatomical details of the human ear, in particular of the outer ear, as shown in
Fig. 1A .Outer ear 10, also known as pinna comprises a plurality of features of significance. Outermost ishelix 11 tracing the periphery of the ear upwards and in towards the skull where it transitions into crus ofhelix 12. Within this is antihelix 13 which in the upward direction bifurcates into crura ofantihelix 14, comprisingsuperior crux 15 andinferior crux 16, separated byfossa triangularis 17. Below antihelix is sulcus auriculaeposterior 18 and further below that again isantitragus 22 which isopposite tragus 21, separated byincisura intertragica 23, also known as the intertragic notch. Within these again is concha 24 which comprisescymba concha 25 andcavum concha 26, separated by crus ofhelix 12. - Immediately within and partially covered by the tragus is the entrance to the
ear canal 30. It is important to realize that this entrance is still a part of cavum concha. The ear canal proper extends from the deepest part of the concha to theeardrum 29, a distance of about 2.5 cm and approximately 4 cm from the tragus. The ear canal comprises an approximately 8 mm lateral cartilaginous part and an approximately 16 mm medial osseous part. It should also be noted that it is typically quite uncomfortable to have any foreign object in the ear canal. The ear canal is partially visible from the outside and is indicated inFig. 1A . - This area immediately within and partially covered by the
tragus 21 does not have an official anatomical name. Since this area is central to the invention and has acoustic and other distinguishing properties relating to comfortable wear it has been called thesub-tragus region 28 for the purpose of this document and is shown inFig. 1B . Theear canal 30 is located below the sub-tragus region. -
Fig. 2A shows the operating principles of the present invention, with an ear unit inserted into an ear as seen from the outside. A line A - A indicates a section forFig. 2B andFig. 2C . Theanchor 200 comprises thecurve 210 having anupper end 212, alower end 214 and acurvature 218. Due to the angles it is not possible to clearly show all components of the anchor in all figures. - The underlying principle is that by separating the
anchoring function 200 from thehearing element 350 it becomes possible to position thehearing element 350 in an optimal position without causing discomfort. By further positioning the hearing element so that it projects in underneath thetragus 21 and enters thesub-tragus area 28, sound is directed into the ear canal without the discomfort that is associated with having a foreign object entering the ear canal. Thehearing element 350 is provided with a hearing element opening 352 where the opening or aperture faces the opening to the ear canal which extends from the sub-tragus area. - It should also be noted that the hearing element, enabled by the separate anchoring, projects underneath the tragus. This can be achieved in several ways.
- In a first embodiment a
hearing element 350 in the form of an electroacoustic transducer 360 is positioned underneath the tragus. Said hearing element is dimensioned to fit in the sub-tragus region.Fig. 2B shows schematically the above construction. - In a second embodiment the
hearing element 350 comprises an electroacoustic transducer 360 attached to anaudio duct 354 provided with anaudio duct opening 356. As long as the audio duct is smaller than the wavelength of the sound, having a frequency of typically 20 Hz to 20000 Hz, corresponding to a wavelength of 15 m to 15 mm respectively, sound is conducted without significant distortion and the effective aperture becomes the opening of the audio duct. - This second embodiment allows for having the electro acoustic transducer larger than that of the first embodiment by retracting it away from the tragus. Since the effective hearing element is the end of the funnel and that this end projects into the sub-tragus region the technical effect is the same as for the first embodiment.
Fig. 2C shows schematically the above construction. - This second embodiment also allows for the electro acoustic transducer to be oriented at an angle that is not parallel to the plane of the audio duct opening. It is preferred that this audio duct opening is perpendicular to the entrance over the ear canal.
- It should be noted that the on ear construction will involve structures that are of the order of the wavelength of high frequency sound, particularly relating to the size of the concha but potentially also of the hearing element according to the fifth solution.
- In one embodiment the audio duct is not in contact with the concha or the tragus. The separation distance will be small compared to the wavelength of the sound and this will therefore lead to a damping of ambient sound, depending on separation distance, length of the audio duct and acoustic impedance mismatch.
- The embodiment of the ear unit according to the invention shown in
Fig. 3 and4 comprises an anchor similar to the applicant's applications, specifically the C-shape as disclosed inWO/2002/045390 , and the improved earpiece having acurve 210 and acurvature 218 as disclosed inWO/2008/147215 , the curve having anupper end 212 and alower end 214. Ahearing element 350 in the form of an electroacoustic transducer 360 formed as a part of ahousing 300 which in turn is attached to said anchor so that when the ear unit is positioned into an ear having a concha and a tragus, the hearing element enters asub-tragus region 28, where theconcha 24 is covered by thetragus 21. - The
hearing element 350 is further provided with agasket 370 arranged substantially around a periphery of the hearing element in order to further stabilise the position of the hearing element as well as provide extra damping of ambient sound. The gasket is preferably made from a resilient material that easily shapes itself to the anatomical details of the ear without exerting uncomfortable pressure. Said gasket is further preferably detachable so that a user can remove it if it is preferred to hear some ambient sound or to change between different sizes and shapes to select the most comfortable size and shape. The gasket can comprise one ormore flanges 372. - The
housing 300 is the mechanical interface between theanchor 200 and thehearing element 350 and is typically suited for holding electronics, wire attachments and the like. - While the anchor is shown in prior art as having a clearly defined lower end, it is within the scope of the definition that the lower end can be embedded in a larger unit such as a housing part.
Fig. 3 andFig. 4 both show such a larger part surrounding the lower end. Due to the angles it is not possible to clearly show all components of the anchor in all figures. - Further illustrative examples useful for the understanding of the invention, are described in the following. For instance damping of ambient sound can be achieved by attaching a
sound damping unit 600 to the anchor. Said sound damping unit is positioned so that when the ear unit is positioned into an ear the sound damping element is located over the concha. This is shown infig. 6 . - The sound damping element typically comprises a
shell 610 and a connector toattachment part 620. The attachment part is adapted for connection toattachment end 504. - This solution avoids external means for attachment such as over-head attachment, headband and over-ear attachment.
- The sound damping unit can be further stabilised by a part extending into
fossa triangularis 17 and/or a part extending under the fold at the top ofhelix 11. - Depending on the size and mass of the sound damping unit and expected physical activity of the user the anchor may be optimised for a larger load bearing capacity than disclosed in in
WO/2002/045390 andWO/2008/147215 . Prior art disclose a comfortable anchor for light weight applications. Light weight in this context means a weight that is so small that the concha is insignificantly distorted when positioned into an ear. The inventor has found that a larger weight can be supported if the anchor is modified to compensate or prevent said distortion. The inventor found that a larger weight pulls the concha down in the direction of gravity. If the user is lying down the pressure is exerted on the anti helix and the curve will distribute the force over a sufficiently large area to avoid this being a problem. If the user is standing up right the force instead exerts in the direction of the intertragic notch. This would result in the concha being pulled downwards and also narrowed so that the area near the tragus would approach the area near the anti tragus. - The inventor has found that by extending the
lower end 214 of theanchor 200 further in the direction of the crus ofhelix 12 into an extendedlower end 216 the problem of distortion is overcome by distributing the force over a wider area and also by countering the forces narrowing the concha. At the same time it is found that the upper end of the anchor does not have to project in underneath the flap covering the lower part of the cavity covered by the lower node of the antihelix of the ear. This is load bearing anchor is shown inFig. 5B at an angle that highlights anoptional curvature 218 in thecurve 210, offering improved attachment.Fig. 5A shows the load bearing anchor having a part extending downwards inserted into an ear whileFig. 5C shows an anchor having no part extending downward. - The load bearing capacity can be further improved by having the upper end of the anchor engage the anterior part of the helix and/or the crus of helix.
- Such a construction has a wide range of application in addition to holding a sound damping element. It could for instance be used to hold ear jewellery and avoid having to puncture the ear lobe for attachment purposes. Such jewellery can be so heavy that traditional ear attachment would be uncomfortable.
- Attachments would typically be through an adaptor called
attachment part 500 connected at a first end to the curve, the housing or both and adapted for attachment to external units. Typically the attachment part is provided with anattachment arm 502 to allow the attachment to be offset at a distance from the concha. At a second end of the attachment part, typically opposite the first end of the attachment part, anattachment end 504 is provided. Preferably this attachment end allows for guided attachment and/or detachment of external units while having the anchor still inserted in the ear. - In many cases the attachment part extends straight out from the area just outside the concha. Where further stability or load bearing capacity is required the attachment part extends through the intertragic notch, optionally contacting the intertragic notch.
- A part extending out from the load bearing anchor would form a convenient and hygienic attachment. In one example the attachment part would extend from the anchor through the intertragic notch. This is shown in
fig. 7 . - Optionally the ear unit can be provided with a part extending downward 400, providing room for battery, electronics, antennas or attachment facilities for wires. This also has the benefit of providing stability by lowering the centre of gravity. Preferably this part extending downwards passes through the intertragic notch and thus provides extra stability.
- This part extending part downward can also provide a convenient basis for the attachment part.
- The various solutions of prior have different properties in terms of occlusion and the ability to exclude or include ambient sounds.
Type Description Occlusion 1 In-ear Very good 2a On-ear without cushion Open 2b On-ear with cushion Quite good 3 Ear bud Good 4 C-shape Very open 5 Angled hearing element Open - It will be appreciated that occlusion in prior art is an inherent property of the design and is fixed with only very minor adjustments such as providing ear buds with extra gaskets will improve the degree of occlusion.
- The inventors of the present invention has realised that by separating attachment functionality to an anchor separated from the hearing element it is possible to provide occlusion in a first inner position wherein the hearing element occludes the opening to the ear canal, and be retracted relative to the anchor into a second position where a passage opens between the hearing element and the concha. It should be noted that the retraction can be away from the tragus, away from the opposite side of the concha from the tragus or both. Retraction in this context means both a movement outwards as well as reducing the cross section of the hearing element, for instance by deflation of a cushioning element or retraction of a gasket, optionally comprising flanges. The effect of this is to open for a passage around the parts occluding in the first position.
Fig. 8A and 8B shows a hearing unit in an un-occluded position and in an occluded position respectively. - Adjusting between the first and the second position can be made without removing the ear unit from the ear. One can envisage automatic position changes, for instance electromechanically, by inputs such as warning sounds or switching functionality between listening to music and making a telephone call.
- The anchor can take on many forms as long as it provides a stable anchoring in the ear without the need for ear canal attachment and still remain within the scope of the invention. Such alternative anchors can be based on prior art, such as over-head attachment, headband and over-ear attachment.
- The invention according to the application finds use in ear attached units for holding a hearing element, and outer elements such as a sound damping element.
Claims (12)
- An ear unit (100), comprising:an anchor (200), andan hearing element (350) connected to said anchor,wherein the hearing element is provided with an aperture,
characterised in that the ear unit provides occlusion in a first inner position wherein the hearing element (350) occludes the opening to the ear canal, and is configured to be retracted relative to the anchor (200) into a second position where a passage opens between the hearing element and the concha. - The ear unit according to claim 1, further comprising means for automatic position changes.
- The ear unit according to claim 2, wherein means for automatic position changes are electromechanic.
- The ear unit according to claim 1, wherein a housing (300) is the mechanical interface between the anchor (100) and the hearing element (350).
- The ear unit according to claim 1 - 4, wherein the hearing element (350) is an electroacoustic element (360).
- The ear unit according to claim 1 - 4 wherein the hearing element (350) is provided with an audio duct (354) having an audio duct opening (356), wherein the aperture is said audio duct opening.
- The ear unit according to claim 1 - 6, further comprising a gasket (370) for blocking external sound
- The ear unit according to claim 1 - 6, further comprising an external sound damping element (600), wherein said sound damping element is attached to at least one of the anchor (200) and the housing (300).
- The ear unit according to claim 1 - 6, further comprising a part extending downward (400) in the direction of gravity when standing up.
- A method for controlling the position of an ear unit according to claim 2, wherein a position change is effectuated based on an input.
- The method according to claim 10 wherein the input is a warning sound.
- The method according to claim 10 wherein the input is switching functionality between listening to music and making a telephone call.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20167517.0A EP3706431A1 (en) | 2012-07-27 | 2013-07-29 | Sub-tragus ear unit |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12178314.6A EP2690883B1 (en) | 2012-07-27 | 2012-07-27 | Sub tragus ear unit |
EP13756212.0A EP2878135B1 (en) | 2012-07-27 | 2013-07-29 | Sub tragus ear unit |
PCT/NO2013/050126 WO2014017922A1 (en) | 2012-07-27 | 2013-07-29 | Sub tragic ear unit |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP13756212.0A Division-Into EP2878135B1 (en) | 2012-07-27 | 2013-07-29 | Sub tragus ear unit |
EP13756212.0A Division EP2878135B1 (en) | 2012-07-27 | 2013-07-29 | Sub tragus ear unit |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP20167517.0A Division EP3706431A1 (en) | 2012-07-27 | 2013-07-29 | Sub-tragus ear unit |
EP20167517.0A Division-Into EP3706431A1 (en) | 2012-07-27 | 2013-07-29 | Sub-tragus ear unit |
Publications (2)
Publication Number | Publication Date |
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EP3148211A1 true EP3148211A1 (en) | 2017-03-29 |
EP3148211B1 EP3148211B1 (en) | 2020-06-17 |
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Application Number | Title | Priority Date | Filing Date |
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EP12178314.6A Revoked EP2690883B1 (en) | 2012-07-27 | 2012-07-27 | Sub tragus ear unit |
EP16193098.7A Withdrawn EP3148212A1 (en) | 2012-07-27 | 2013-07-29 | Ear unit |
EP16193043.3A Active EP3148211B1 (en) | 2012-07-27 | 2013-07-29 | Ear unit |
EP20167517.0A Withdrawn EP3706431A1 (en) | 2012-07-27 | 2013-07-29 | Sub-tragus ear unit |
EP13756212.0A Revoked EP2878135B1 (en) | 2012-07-27 | 2013-07-29 | Sub tragus ear unit |
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EP12178314.6A Revoked EP2690883B1 (en) | 2012-07-27 | 2012-07-27 | Sub tragus ear unit |
EP16193098.7A Withdrawn EP3148212A1 (en) | 2012-07-27 | 2013-07-29 | Ear unit |
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Application Number | Title | Priority Date | Filing Date |
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EP20167517.0A Withdrawn EP3706431A1 (en) | 2012-07-27 | 2013-07-29 | Sub-tragus ear unit |
EP13756212.0A Revoked EP2878135B1 (en) | 2012-07-27 | 2013-07-29 | Sub tragus ear unit |
Country Status (8)
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US (5) | US10602255B2 (en) |
EP (5) | EP2690883B1 (en) |
JP (2) | JP2015523039A (en) |
KR (2) | KR102042877B1 (en) |
CN (2) | CN108810705B (en) |
ES (2) | ES2650616T3 (en) |
NO (2) | NO2690883T3 (en) |
WO (1) | WO2014017922A1 (en) |
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2012
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- 2012-07-27 EP EP12178314.6A patent/EP2690883B1/en not_active Revoked
- 2012-07-27 ES ES12178314.6T patent/ES2650616T3/en active Active
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2013
- 2013-07-29 EP EP16193098.7A patent/EP3148212A1/en not_active Withdrawn
- 2013-07-29 EP EP16193043.3A patent/EP3148211B1/en active Active
- 2013-07-29 CN CN201810757053.6A patent/CN108810705B/en not_active Expired - Fee Related
- 2013-07-29 NO NO13756212A patent/NO2878135T3/no unknown
- 2013-07-29 US US14/417,284 patent/US10602255B2/en active Active
- 2013-07-29 CN CN201380039569.2A patent/CN104641658B/en active Active
- 2013-07-29 JP JP2015524216A patent/JP2015523039A/en active Pending
- 2013-07-29 ES ES13756212.0T patent/ES2654651T3/en active Active
- 2013-07-29 WO PCT/NO2013/050126 patent/WO2014017922A1/en active Application Filing
- 2013-07-29 KR KR1020157002294A patent/KR102042877B1/en active IP Right Grant
- 2013-07-29 EP EP20167517.0A patent/EP3706431A1/en not_active Withdrawn
- 2013-07-29 KR KR1020197005112A patent/KR102042965B1/en active IP Right Grant
- 2013-07-29 EP EP13756212.0A patent/EP2878135B1/en not_active Revoked
-
2016
- 2016-02-26 US US29/555,999 patent/USD814443S1/en active Active
- 2016-02-26 US US29/555,991 patent/USD822644S1/en active Active
-
2018
- 2018-06-07 US US29/650,559 patent/USD848400S1/en active Active
- 2018-07-23 JP JP2018137572A patent/JP6697035B2/en active Active
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- 2020-03-20 US US16/825,768 patent/US20200221200A1/en not_active Abandoned
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CN111134955A (en) * | 2020-02-09 | 2020-05-12 | 俞嘉伟 | Special supplementary fixed ear sampling device of otology |
CN111134955B (en) * | 2020-02-09 | 2021-09-24 | 洛阳市中心医院(郑州大学附属洛阳中心医院) | Special supplementary fixed ear sampling device of otology |
Also Published As
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EP2878135A1 (en) | 2015-06-03 |
KR102042965B1 (en) | 2019-11-08 |
EP2878135B1 (en) | 2017-10-25 |
CN104641658A (en) | 2015-05-20 |
KR20190025029A (en) | 2019-03-08 |
KR102042877B1 (en) | 2019-11-08 |
KR20150037911A (en) | 2015-04-08 |
EP3706431A1 (en) | 2020-09-09 |
EP2690883B1 (en) | 2017-10-11 |
USD814443S1 (en) | 2018-04-03 |
EP3148212A1 (en) | 2017-03-29 |
NO2690883T3 (en) | 2018-03-10 |
ES2650616T3 (en) | 2018-01-19 |
USD848400S1 (en) | 2019-05-14 |
WO2014017922A1 (en) | 2014-01-30 |
JP6697035B2 (en) | 2020-05-20 |
NO2878135T3 (en) | 2018-03-24 |
USD822644S1 (en) | 2018-07-10 |
EP3148211B1 (en) | 2020-06-17 |
US20150215693A1 (en) | 2015-07-30 |
ES2654651T3 (en) | 2018-02-14 |
JP2018186557A (en) | 2018-11-22 |
JP2015523039A (en) | 2015-08-06 |
US20200221200A1 (en) | 2020-07-09 |
CN104641658B (en) | 2018-08-07 |
CN108810705B (en) | 2020-03-10 |
EP2690883A1 (en) | 2014-01-29 |
US10602255B2 (en) | 2020-03-24 |
CN108810705A (en) | 2018-11-13 |
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